Primordial Twin Form

Nurturing the Primordial Twin Form Dark Dragonlord is not a hassle.

Soon, Luke had the Primordial Twin Forms at Tier 7 with respect to their Age Tiers by feeding them water, feeding them meat, and feeding them Aeon Crystals.

His Summoner Stockpile came into use here.

This was the right thing he saved it for.

Seraphina helped a great deal too. Anything that passed through her hands gained an extra edge in potency, so the little dragons grew stronger and sturdier than their Tier was meant to.

Furthermore— since Seraphina hatched the egg inside her Spirit from the start, a bond ran between her and the Primordial Twin Form Dark Dragonlord now.

Calling it a Soul Imprint wouldn't be far off.

Which means the Dark Dragonlord now carries a gift of spirituality bestowed by an Empyreal Angel.

But Luke didn't want the Primordial Twin Forms growing too dependent on Seraphina.